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Finding the Fourth Proportional to 492,836.40, 691,837.20 and 492,836.40

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Solution

The fourth proportional to 492,836.40, 691,837.20 and 492,836.40 is: 691,837.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,836.40 : 691,837.20 = 492,836.40 : x
  2. Step 2: Convert to fraction form
    492,836.40/691,837.20 = 492,836.40/x
  3. Step 3: Cross multiply
    492,836.40x = 691,837.20 × 492,836.40
  4. Step 4: Simplify right side
    492,836.40x = 340,962,555,034.08
  5. Step 5: Solve for x
    x = 340,962,555,034.08/492,836.40
  6. Step 6: Final answer
    x = 691,837.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.